user32: Allow a NULL foreground window in the tests

James Hawkins truiken at
Tue Jun 10 19:28:20 CDT 2008

On Tue, Jun 10, 2008 at 7:15 PM, James Hawkins <truiken at> wrote:
> On Thu, May 29, 2008 at 8:24 PM, Dmitry Timoshkov
> <dmitry at> wrote:
>> "James Hawkins" <truiken at> wrote:
>>> Passing 0 for the foreground window essentially disables the test,
>>> whereas allowing a NULL window is testing another variation of what
>>> can happen with the foreground window, just like if a last error is,
>>> e.g.,  ERROR_FILE_NOT_FOUND on one platform instead of
>>> ERROR_PATH_NOT_FOUND.  Your method disables the test completely.
>> Yes, passing foreground == 0 disables the foreground window test. That
>> should be done very carefully for the tests that always fail. I'd expect
>> for instance test_SetActiveWindow() and test_SetForegroundWindow() not
>> need to disable it.
> I've debugged this a bit more, and when running the user32:win test
> within the winetest.exe program, all checked calls to
> GetForegroundWindow return NULL.  When running the user32:win test by
> itself from the command line, only 7 tests fail the
> GetForegroundWindow call (compared to 40).  This makes me wonder about
> the behavior of GetForegroundWindow in a child process window, but I'm
> not really sure where to go from here.

Some more information: these 40 GetForegroundWindow failures occur on
all platforms >= win2k.

James Hawkins

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